01 - Preheat oven to 375°F.
02 - Unroll crescent dough and press into bottom of 9x13-inch baking pan, sealing seams completely.
03 - Bake for 10–12 minutes until golden brown. Allow to cool completely.
04 - Combine cream cheese, sour cream, and ranch seasoning in medium bowl. Beat until smooth and creamy.
05 - Spread cream cheese mixture evenly over cooled crust.
06 - Sprinkle broccoli, cauliflower, red bell pepper, carrot, and green onions evenly over cream cheese layer.
07 - Top with shredded cheddar cheese if desired. Gently press toppings into cream cheese layer to adhere.
08 - Refrigerate at least 1 hour before slicing into 16 bars. Serve chilled.